Study of Restrike Overvoltage in the Test of Switching Small Capacity Current with Disconnector

MENG Zheng-zheng1; QI Xiao-hua1; Lü Liang2; LI Yan-ming3

doi:10.13296/j.1001-1609.hva.2010.11.011

您当前的位置：

首页 >

文章列表页 >

Study of Restrike Overvoltage in the Test of Switching Small Capacity Current with Disconnector

更新时间：2025-04-26

- Study of Restrike Overvoltage in the Test of Switching Small Capacity Current with Disconnector
- High VoltageApparatus Vol. 46, Issue 11, Pages: 74-76+81(2010)
- 作者机构：
  
  1. 天津电力公司技术中心
  2. 陕西电力科学研究院
  3. 西安交通大学
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2010.11.011
  CLC： TM564.1
- Published：2010
- 稿件说明：
移动端阅览
[1]孟峥峥,齐效华,吕亮,李彦明.隔离开关切合容性小电流试验中的重燃过电压研究[J].高压电器,2010,46(11):74-76+81.

MENG Zheng-zheng1, QI Xiao-hua1, Lü Liang2, et al. Study of Restrike Overvoltage in the Test of Switching Small Capacity Current with Disconnector[J]. High voltageapparatus, 2010, 46(11): 74-76+81.
[1]孟峥峥,齐效华,吕亮,李彦明.隔离开关切合容性小电流试验中的重燃过电压研究[J].高压电器,2010,46(11):74-76+81. DOI： 10.13296/j.1001-1609.hva.2010.11.011.

MENG Zheng-zheng1, QI Xiao-hua1, Lü Liang2, et al. Study of Restrike Overvoltage in the Test of Switching Small Capacity Current with Disconnector[J]. High voltageapparatus, 2010, 46(11): 74-76+81. DOI： 10.13296/j.1001-1609.hva.2010.11.011.

摘要

在隔离开关切合容性小电流试验中

回路中可能会由于隔离开关的多次重燃而产生特快速暂态过电压（very fast transient overvoltage

VFTO）

这对试验回路中的设备和元件

尤其是试验变压器绕组绝缘构成了很大的威胁。笔者利用ATP-EMTP电磁暂态仿真软件计算了隔离开关进行分闸操作时在试验变压器端部出现的VFTO

分析了影响重燃过电压大小的因素

并研究了利用在试验变压器输出端加装保护间隙时的保护效果。仿真结果表明

分闸时重燃过电压与发生重燃的时间有关

与燃弧时间无关

弧道电阻对VFTO也有一定的抑制作用。采用在试验变压器输出端加装保护间隙的方法

可明显降低试验变压器端部过电压值

达到保护试验变压器的目的。

Abstract

In the test of switching small capacity current with a disconnector

the circuit might cause very fast transient overvoltage （VFTO） because of multiple restrikes of the disconnector

which makes the devices

especially the windings of transformer in the test circuit in great danger.VFTOs at the transformer terminals in switching processes were calculated by ATP-EMTP software

the factors that may affect the magnitude of restrike overvoltage were analyzed

and the protection effectiveness of adding gap at transformer output end against restrike overvoltage was analyzed.Simulation results show that restrike overvoltage is dependant on restrike time instead of arc time

and the resistance of arc channel imposes a prohibition on VFTO.Addition of protection gap at output end of a test transformer can clearly reduce its end overvoltage.

关键词

Keywords

references

Views

275

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Opening and Closing State Monitoring for GIS Disconnector Based on Voiceprint Characteristic Analysis

Fault Diagnosis of High Voltage Disconnector Based on Attitude Angle and Speed Curves

Research on Mechanical Fault Detection Technology of Disconnector Based on Output Power of Motor

Study on Electromagnetic Transient Characteristics During Switching Operation of 750 kV GIS Substation

Research on Mechanical Characteristics and Stability Improvement Measures of Disconnector Parts Under Hot and Cold Temperature Conditions

Related Author

CHEN Fuguo

JIANG Zhuangqiang

LI Zhongqi

CHEN Liang

ZHAO Lili

CAI Jie

ZHANG Jinbo

LI Kemeng

Related Institution

School of Electrical Engineering, Xi'an Jiaotong University

Pinggao Group Co., Ltd.

Xi'an High Voltage Apparatus Research Institute Co., Ltd.

Xi'an Power Supply Company of State Grid Shaanxi Electric Power Co., Ltd.

Electric Power Research Institute, Yunnan Power Grid Co., Ltd.

⁰